Himpunan penyelesaian persamaan nilai mutlak ( x-5 ) -2 = 0

By Admin ReiPosted on December 3, 2022

Himpunan penyelesaian persamaan nilai mutlak ( x-5 ) -2 = 0

$|x - 5| - 2 = 0 \ |x - 5| = 2 \ { |x - 5| }^{2} = {2}^{2} \ {(x - 5)}^{2} = {2}^{2} \ {(x -5)}^{2} - {2}^{2} = 0 \ (x - 5 + 2)(x - 5 - 2) = 0 \ (x - 3)(x - 7) = 0 \ x = 3 : atau : x = 7$